AITA for realizing that my best friend is actually a ghost and not telling him because i'm worried that if he realizes he's dead he'll finally be able to accept it and fully pass on and i won't be able to hang out with him anymore?

AITA if i've been dead for a while but haven't told my best friend yet because he doesn't seem to have realized i'm a ghost and if he does i'm worried that he'll finally be able to accept it and let me go and i can't bear the thought of losing him?

AITA for killing that guy